/**
 * Copyright 2008-2009 HAN.BIFANG
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package han.bashe.business.pipeline;

/**
 * @Author Kent
 */
public abstract class Handler {
	
	public abstract boolean preProcess(PipelineContext ctx);
	
	public abstract void process(PipelineContext ctx);
	
	public abstract void postProcess(PipelineContext ctx);
	
	public void handle(PipelineContext ctx){
		if(preProcess(ctx) == false)
			return ;
		process(ctx);
		postProcess(ctx);
		
	}
}  